National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

64°F

18°C

Humidity 68%
Wind Speed S 9 mph
Barometer 29.94 in (1014.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Apr 1:56 pm EDT
Extended Forecast for

South Dennis MA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 67. South wind around 6 mph.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 8pm and 11pm. Patchy fog after 8pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61. Northwest wind 5 to 8 mph becoming south in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. West wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 9am. Mostly cloudy, with a high near 61. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49. Southwest wind around 6 mph.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers after 11am. Mostly cloudy, with a high near 61. Southwest wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before midnight. Mostly cloudy, with a low around 42. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.

    Low: 42 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 53. Northeast wind 5 to 8 mph.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 67. South wind around 6 mph.
Tonight
A slight chance of showers and thunderstorms between 8pm and 11pm. Patchy fog after 8pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 49. Southwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 61. Northwest wind 5 to 8 mph becoming south in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. West wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers before 9am. Mostly cloudy, with a high near 61. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 49. Southwest wind around 6 mph.
Friday
A chance of showers after 11am. Mostly cloudy, with a high near 61. Southwest wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 30%.
Friday Night
A chance of showers before midnight. Mostly cloudy, with a low around 42. Southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 53. Northeast wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 44. East wind around 5 mph becoming southeast after midnight.
Sunday
A chance of showers. Mostly cloudy, with a high near 56. South wind 5 to 9 mph. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 41. West wind around 8 mph. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 52. West wind 8 to 10 mph, with gusts as high as 20 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
9:31 am EDT Apr 14, 2026
Forecast Valid:
2pm EDT Apr 14, 2026-6pm EDT Apr 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation